Space Travel; Volume 5, Number 4; July 1958. Greenleaf Publishing Company, 814 Dempster Street, Evanston, Illinois. Dimensions are 5 3/8" width by 7 1/4" Height by 1/4" thickness and weight 91grams, 132 pages. Copyright was issued in 1958, but no renewal was recorded, this work is Public Domain under Rule 6 of the Copyright Statutes of the United States. Etext created by Gerard Arthus.